5" Indoor Outdoor Hygrometer/Thermometer, Humidity Gauge Indicator Temperature Humidity Monitor, Analog Hygrometer Humidor (English Version)

Summary: 4-way comparison of different hygrometer models. Evaluation: Two main focus areas: 1) Is it accurate, and 2) can it be adjusted. For the accuracy, I adjust all of the hygrometers outdoor at 90% relative humidity, and then took them inside, and they all tracked to 60%, except for unit #4, which remained at 80%. So three tracked together, and I deemed those "relatively accurate". Unit #1: 5" Hygrometer Thermometer Indoor Outdoor [UPDATED English Version], Humidity Gauge Indicator Temperature Humidity Monitor, Analog Hygrometer Humidor for Patio, Wall Decorative, Room, Home, Office Rank: 1st Pros: a) easy to read dial, b) relatively accurate, c) reading updates quickly, d) adjustable Cons: None https://smile.amazon.com/gp/product/B07LD3PBNK Unit #2: 75mm Round Cigar Oasis Analog Hygrometer Cigar Hygrometers Cigar Hygrometer Round Cigar humidor Hygrometer Rank: 2nd Pros: a) fairly easy to read, b) relatively accurate, c) adjustable Cons: None https://smile.amazon.com/gp/product/B07H8CQVCN Unit #3: Lockdown Vault Hygrometer Rank: 3rd Pros: a) relatively accurate Cons: a) adjustment requires disassembly https://smile.amazon.com/gp/product/B004RQWLAA Unit #4: Cigar Oasis Analog Hygrometer by Western Humidor Rank: 4th Pros: None Cons: Not accurate, relative to three other units. https://smile.amazon.com/gp/product/B00JXOKPT0

Regardless of whether it was calibrated before leaving manufacturer, it has been bounced around in boxes, by forklifts, in containers in ships, by cranes, in warehouses, in trucks and probably more than once by the classic "savage baggage handler." I do not fault the gauge for being off when first opened. I did the salt/water calibration. (1/2 cup table salt; 1/4 cup water; sealed container/bag; stable temperature) Search this process if you are unfamiliar with it. I had to adjust the gauge iteratively. I found small adjustments did overshoot when the gauge was allowed to stabilize again. I finally called it good enough and it is mighty close. I'm an engineer and wanted it perfect, finally had to admit to myself that this is not a lab instrument so do not expect it to be one! The thermometer is adjustable as well. I found it accurate out of the box and did not need adjustment. The relative humidity is large and easily read. The temperature dial is small and not easily read, but I didn't purchase this as a thermometer. The main body is metal, stainless I think. The lens is glass (I tried to scratch and whatever it is is much harder than most plastics.) The stand/foot is plastic and is attached with a phillips head screw. I like the gauge and will buy another one for in the house. The one I bought is outdoors. It is stable on its stand/foot and it does have a keyhole slot to hang (after removing the stand.)

The Uppon hygrometer looks really nice and seems to be accurate. I like the colored zones on the humidity scale. They make it easy to see if the humidity levels are good or not. A thermometer is included, which is nice, but the Fahrenheit scale is not very useful. The Celsius scale is on the top with normal temperature intervals (10, 20, 30, etc). The Fahrenheit scale is underneath that, but it uses the same scale as the Celsius temperatures on top. So the intervals between Fahrenheit temperatures are very awkward. For example, it jumps from 68 to 86. If the temperature is somewhere between these numbers, it's impossible to know precisely what the reading is. They should have put a separate Fahrenheit scale on the thermometer like almost all other F/C thermometers. I took away one star for this flaw. The primary function of the device (hygrometer) is great!

Nice looking hygrometer to keep track of the humidity in my music room/office. I really like the analog dial and austere style and it works.

If you wish to control the humidity this is an easy gauge to read even at a distance. I liked it so much I bought another one just like it. I put one in my cellar to control the humidity and now I am getting one for my house

I did calibrate it using the old 'Salt' method... You can look it up on some of the cigar websites. Mine was only 1% off. Both the Hygrometer/Thermometer are calibratable, which I like... It's accurate, now and it's a nice quality, fairly large/readable instrument. The adjustment screws on the back have a little bit too much 'play' in them, but once you get used to calibrating, it's not a deal-breaker...

I cannot get this to read accurately. Out of the box, I placed it on my nightstand next to a digital unit (also newly purchased) & an alarm clock that shows temperature. I wasn't sure which units were correct so I wanted to compare. I left them for 6 hrs and this analog unit didn't match the others. Leaving them overnight: they all remained the same, respectively. Then, I moved the units to my hallway where my ecobee is {Photo doesn't show this unit, but only the digital one. This unit is sitting nearby though}. Within 5 hrs, the digital one essentially matched the ecobee readings. This analog unit did not budge from the previous reading in the bedroom. I moved them both into my dining room. The 2 photos on the table are from 24 hrs, then 36 hrs: the humidity readings were still quite off from the digital unit. After the 24hr mark, I did try to adjust the humidity by 3 notches/% and adjusted the temperature to match all my other household units. To more accurately test, I then wrapped the unit in a damp cloth towel & left it for 2 hrs. It read 90% and not 100%. Instead of adjusting the calibration by 10% to 100% after this 1st test, I tried the salt test. I initially placed it in a ziploc type bag overnight w/ the salt slurry, but the hygrometer didn't budge. Perhaps the baggie I used was too thin to create a closed environment. So I placed it in a container with the salt slurry & left it for almost 2 days. See photo: its barely at 50% and not 75% relative humidity from the salt. I took the lid off the container to allow it to come back to 'normal' and after 4 hrs, it's now sitting at 10%. That's the fastest this gauge has even shifted! My home in general is not at 10% humidity, especially on the kitchen counter. Thus, having only adjusted the humidity by 3% and not more, this unit is bouncing all over the place, albeit slowly. The temperature reading has settled into a more accurate reading, but not the humidity. I am returning it as defective.

Great item to check oven temp!